Milling-machine vise



(No Model.)

P. H. RICHARDS.

MILLING MACHINE VISB. No. 419,072. Patented Jan. 7., 1890.

Inventor.-

fry/2 J N, PETERS, Phomumu ra lm, Wavhlngton. v.0

UNITED STATES PATENT OFFICE.

FRANCIS H. RICHARDS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO ECKLEY B. COXE, OF DRIFTON, PENNSYLVANIA.

MILLING-MACHINE VISE.

SPECIFICATION forming part of Letters Patent No. 419,072, dated January 7, 1890.

I Application filed December 6, 1888. Serial No. 292,846. (No model.)

To aZZ whom it may concern: lesseningthenumber of jaws required in any Be it known that I, FRANCIS H. RICHARDS, particular case has on the inner end thereof a a citizen of the United States, residing at swivel-jaw 10, pivoted in the center thereof at Hartford, in the county of Hartford and State 11 in a slot 12, formed in said sliding jaw N.

5 of Connecticut, have invented certain new and Thus the pressure of the jawN is transmitted useful Improvements in Vises for Millingto the bar A at two points 13 14, and only half Machines, of which the following is a specifimany jaws N are required as would be the cation. case if each said jaw bore directly on said This invention relates to vises or work-holdbar. The forward part of the bed B is chan- 6o [0 ers for use on milling-machines, metal-planers, neled, as at 15, to receive a series of thrustand multiple drills, and on other machines in blocks D and a corresponding series of which the pieces to be operated upon should wedges E, through which said blocks are operbe simultaneously clamped at several points ated. Forward of the wedges E, I usually in the length thereof, the object being to furplace a steel or bronze shoe 16, (especially t5 nish such a vise in which the several clamps when the bed B is made of cast-iron,) on which may be operated from one screw or spindle. the wedges may slide and to reduce the fric- In the drawings accompanying and forming tion. For operating the first wedge or actua part of this specification, Figure 1 is a plan ating slide I make a screw-thread therein View, with the vise-cover removed, of a vise and provide a powerful screw 20, which is 2o embodying my improvements; Fig. 2, a plan journaled in the bed-plate at 18 between colview of a portion of the bed-plate and the lars 17 and 19 and has a head 21, whereby to clamp-moving devices; Fig. 3, a view in front turn the screw. By this or equivalent means elevation, and Fig. 4- a vertical section on line a longitudinal movement in either direction a a of Fig. 1. may be imparted to the first wedge E. The z 5 Similar characters designate like parts in bearing-faces of the said wedges and blocks all the figures. are madeinclined at about forty-five degrees The bed-plate of the vise is designated by to their lines of movement, and the opposite B, and is preferablyfurnished with a suppleends of the same block (or wedge) is inclined mental bed or adjustable jaw C, on which to in opposite directions. The block D bears 011 0 place the piece A to be operated upon. Said its parallel side 2i against the shoulder or jaw C is backed up by a blocking-piece 2, rear face 25 of the jaw N and forces said jaw which is to be changed to accommodate varioutward until the bar A stops the further ous widths of pieces A, and the blocking 2 is movement thereof. At this time any further supported against lateral movement by the movement of wedge E forces the block D 8: 3 5 abutment 3 of the bed-plate. The jaw C is or along parallel to its own movement, and thus maybe held down by screws at, which pass forces the wedge E against the block D to through slots 5 and are furnished with nuts 6, drive forward the jaw N In like manner any adapted to slide in the chambers 7, formed in required number of said elements may be the under side of the bed-plate. operated from the first wedge; but it should 0 For clamping the bar or piece A against the be noticed that in practice the proportions of jaw C, I employ a series of clamp-jaws which the several parts should be such, including are operated by a series of co-operating thrust the working-stroke of the jaws N, that the devices, in which series the first said device center line 26 of either block D shall not pass operates the first jaw, and at the same time beyond the bearing-surface 25 of the jaw, 5 transmits force to the second device, and this thereby avoiding any tendency of said block to the third, and so on to the end of the series. to turn out of proper position between the In the drawings, N designates any one of wedges on citherside thereof. At the further the clamp-jaws without choice, these being end of the series from the operating-wedge E particularly referred to as N N &c. Other the last wedge E formsa fixed inclined abut- I00 50 duplicated details are referred to in the same ment. The third block D having a given manner. Each clamp-jaw N as a means for amount of longitudinal movement, the block ,of them, the jaws N are extended forward over the said wedges and blocks, this extension being designated by 30 and containing a spring 31 for retracting the jaw. A plug 32 slides in the spring-receiving hole in said part and bears against the abutment 33 of the cap P, which covers the entire series of jaws and their operating devices. A screw 34 closes the outer end of the said bore in extension 30. By means of this construction the distance 35 may be quite short without permittingthe jaws N to be cramped in their ways by the movement under pressure of the blocks D against said jaws, and also the otherwise necessary width of the vise is materiall y reduced.

In preparing to use the vise the position of jaw G is first adjusted by suitable blocking at 2, so that only a slight movement of the jaws N is required. The piece A being then laid on said stationary jaw, the wedge E. is forced along until all the jaws N are driven out with a force sufficient to properly retain said piece A in place. A fixed stop 40 is usually provided for locating the piece A longitudinally of the vise.

Having thus described my invention, I claim 1 1. In a work-holder, the combination, with the bed-plate, of the fixed jaw, the clamp-jaws, the thrust-blocks bearing on said clamp-j aws, wedges intermediate to said blocks, and means, substantially as described, for sliding the wedges and blocks, the abutting surfaces substantially as described, all

of the wedges and blocks being inclined to their lines of motion, all substantially as described.

2. In a work-holder, the combination, with the bed-plate having a fixed jaw, of the clampjaws, the blocks D, wedges E, and means, substantially as described, operating the wedges and blocks, said blocks and the intermediate wedges having their opposite ends inclined in opposite directions, substantially as described.

3. In a work-holder, the combination of a bed-plate having cap P, the jaw N, means, substantially as described, adapted to force out said jaw, and the spring in said jaw arranged to retract the same, substantially as described.

4. In a work-holder, the combination of the bed-plate, the jaws N, having extensions 30, the series of blocks D, bearing on the faces 25 of said jaws, and wedges, substantially as described, operating said blocks from the movement of the first wedge, substantially asdescribed.

5; In a work-holder, the combination of the fixed jaw, the movable jaws arranged to move crosswise to the fixed jaw, the screw arranged to actuate the slide lengthwise to said fixed jaw, and intermediate blocks and wedges,

coacting substantially as described.

6. The combination, with a bed-plate and the sliding jaw, of the fixed inclined ab utment E the thrust-block D and the wedge E all substantially as described.

FRANCIS H. RICHARDS.

Witnesses:

SAML. W. PoWEL, HENRY Ll RECKARD. 

